Breathing Air Requirements The main standards affecting breathing air are BSEN529, EN12021 and COSHH. The requirements for a breathing air system are shown in the table opposite and the requirements for the quality of the air are shown below. Niltox purifiers ensure a simple, efficient and cost effective way to meet these requirements. Maximum concentration of contaminants in breathable air. EN12021, COSHH Carbon monoxide Carbon dioxide <3ppm <500ppm Oil mist 0.5,g/m 3 Pressure Dew Point Oxygen 20-23% Odour and taste 5 o C below lowest ambient or -11 o C None Transcription of extract from EN529-2005. Table A.2 Summary of main elements associated with a compressor system for producing breathable air 1 Atmospheric air Typical composition of natural air is given in Table A.1 of EN 12021:1998. 2 Air intake filter The intake should be located in fresh air, upwind and as far away as possible, both vertically and horizontally from sources of contamination. The filter is to remove coarse particles to protect the compressor. 3 Main compressor With system controls and alarms or monitoring for pressure, temperature and oil level with standby compressor when necessary. 4 Aftercooler With condensate drain facility. 5 Separator To remove large water and oil droplets with condensate drain facility. 6 Air receiver For pressure stabilisation and compressor load control with condensate drain facility. Typical position in system. See also reserve air storage [13] below. 7 Coalescing filter To remove small water droplets, oil mist and particles with condensate drain facility. Elements become blocked and should be monitored for pressure drop. 8 Dryer stage To remove water vapour to ensure the pressure dew point is below ambient temperature: a)desiccant type with carbon pre-filter and outlet dust filter. Essential for subzero temperatures and/or 11 C when ambient temperature is not known. Also for protection to following gas and catalyst stages. Fitted with minimum pressure valve when necessary. Self-reactivating or throw-away cartridges. Should be monitored for dryness. Carbon dioxide can also be removed by some types of desiccant dryer filled with molecular sieve. b)refrigerant type with outlet coalescing filter/carbon filter with condensate drain facility for ambient temperatures above zero, heated factory spaces, and when gas filters and catalyst stages are not used. 9 Gas filter stage(s) To remove carbon dioxide and other gaseous contaminants including odour and taste. Either throw-away elements or self-reactivating. Should be monitored for effectiveness. 10 Catalyst stage To remove carbon monoxide and ozone. Either throw-away elements or selfreactivating. Should be monitored for effectiveness. 11 Particle filter stage To remove dust particles generated by previous stages. Often forming an integral part of the gas filter and catalyst filter. 12 non-return valve To prevent reserve air storage from leaking back through the compressor system. 13 Reserve air storage To provide enough air for enough time for all users to escape to a place of safety in the event of compressor failure. This is not an EBF (Emergency Breathing Facility). No protection is provided if the hose breaks. Optional position. See air receiver [6] above. 14 Breathable air Flow control units, monitoring facilities, couplings and distribution tubes. NOTE 1 Components should be sized for maximum air flow for the total number of breathing apparatus connected to the system at one time. NOTE 2 Depending on the size of the system, items 7 to 11 can be large units at source or subdivided into smaller units and wall mounted at the take off point or portable to provide personal protection at the point of use.
Niltox Breathing Air Purifiers Niltox purifiers are a range of compressed air breathing purifiers designed to deliver compressed air to meet current British and European standards*. Niltox purifiers adopt a unique design concept where all the purification stages are contained in sealed cartridges. This enables all stages to be reactivated during the purge cycle and thus ensures that all stages remain fully efficient during the life of the cartridges. All cartridges contain the colour change monitor. Niltox purifiers are unique in their design and offer many benefits over competitors products. Remove Carbon Monoxide and carbon Dioxide Only a few breathing air systems on the market actually provide protection from these gases. Colour Change Monitor The purifiers incorporate a highly visible colour change monitor that gives a continuous indication of the units status. Easily Serviced One service interval with all materials contained in cartridges. No loose materials and no complicated maintenance schedules. Reduced testing requirements The colour change monitor will allow reduced air quality testing intervals. * BSEN529 EN12021, COSHH
Niltox Unique Colour Change Monitor BLUE IS NEW Blue strip shows unit is working and providing breathing quality air. Change line The cartridge is clearly marked to show when replacement is necessary Normal operation The cartridge has an area where the monitor is a mixture of pink and blue and shows normal operating. PINK IS EXTINCT The monitor turns pink at the bottom and shows normal operation. If the pink reaches the maximum mark the cartridge should be replaced. Every Niltox cartridge contains the unique colour change strip. This strip is a positive indication that the purifier is working properly. If the unit is used in a properly installed and maintained system then contamination risks have been controlled. Under COSHH if the risk has been controlled than further monthly testing need not be carried out. A test on the system should be carried out a least annually.
NILTOX PURIFIERS 6AR, 12AR and 18AR This range of three purifiers are designed to be simple and low cost yet provide full protection. Removes Carbon Monoxide, Carbon Dioxide, water and oil vapour, smells, dirt and dust and of course risk and doubt. The range provides air for 1, 2 or 3 users and utilises the unique Niltox colour change monitor. Easy maintenance one service interval with easily replaced cartridges and no loose materials. Options include :- Fully pneumatic operation, low pressure alarm, outlet manifold a high efficiency pre filter and fully enclosed cabinet.
NILTOX PURIFIERS 6AR, 12AR and 18AR C1 6AR 12AR 18AR FLOW L/M 180 360 540 HEIGHT 500 740 970 H WIDTH 400 400 400 DEPTH 240 240 240 PIPE SIZE B.S.P ½ ½ ½ CLEARANCE 400 600 800 PV RATING 2@15 2@30 2@45 W D WEIGHT 13 17 20
Niltox Purifiers 24,30 and 36AR This range of three purifiers are designed to be simple and low cost yet provide full protection. The range provides air for 4, 5 or 6 users and utilises the unique Niltox colour change monitor. The units come in a cabinet and have a range of options including:- fully pneumatic operation, low pressure alarm and hours run meter. Removes Carbon Monoxide, Carbon Dioxide, water and oil vapour, smells, dirt and dust and of course risk and doubt. Easy maintenance one service interval with easily replaced cartridges and no loose materials.
Niltox Purifiers 24AR, 30AR and 36AR 24AR 30AR 36AR C1 FLOW L/M 720 900 1080 HEIGHT 800 1040 1040 H WIDTH 600 600 600 DEPTH 300 300 300 PIPE SIZE B.S.P ½ ½ ½ CLEARANCE 415 595 595 D PV RATING 63 80 95 W WEIGHT
Niltox Purifiers 18 to 150 HR This range of six purifiers is designed for larger flow applications where single purifier at source is required. The HR range units come complete with fully pneumatic operation, low pressure alarm and hours run meter. The range provides air for 3 to 23 users and utilises the unique Niltox colour change monitor. Removes Carbon Monoxide, Carbon Dioxide, water and oil vapour, smells, dirt and dust and of course risk and doubt. Easy maintenance one service interval with easily replaced cartridges and no loose materials.
Niltox Purifiers 18HR to 150 HR 18 HR 36 HR 50H R 75H R 100H R 150H R P L C P L C FLOW L/M 500 1000 1400 2100 2800 4200 HOUSING LAYOUT, PLAN VIEW P L C HEIGHT 600 1314 1461 1314 1671 1671 W C D WIDTH 500 750 750 750 750 830 DEPTH 300 400 510 644 644 1030 D P OPTIONAL FILTER BREATHING AIR PURIFIER NILTOX 150 HR INLET OUTLET PIPE SIZE B.S.P ½ ¾ 1 1 1 1.1/4 CLEARANCE 450 850 1150 850 1150 1150 H PV RATING 43 86 129 86 129 129 PLC (optio n) P L C WEIGHT 35 85 110 158 190 220 NO OF HOUSINGS 2 2 2 4 4 6
SPECIALS Niltox Purifiers can also be designed to meet specific requirements. Anything from stainless steel heavy duty models to large systems removing only specific contaminants. The cartridge design allows the bed construction to be easily changed to allow a whole range of contaminants that have been identified in risk assessments to be removed. Please contact Willpower Ltd for more details.